Add support for HEIF formats

[odan]

Current iPhones take photos and videos in HEIF formats.

Specifications:

HEIF

• https://nokiatech.github.io/heif/technical.html
• http://nokiatech.github.io/heif/index.html
• http://nokiatech.github.io/heif/examples.html

HEIC (Photos)

• https://en.wikipedia.org/wiki/High_Efficiency_Image_File_Format

AV1 Image File Format (AVIF)

• https://en.wikipedia.org/wiki/AV1#AV1_Image_File_Format_(AVIF)
• https://aomediacodec.github.io/av1-avif/
• https://de.wikipedia.org/wiki/AOMedia_Video_1
• https://compare.rokka.io/_compare/#heif=40&jpeg=80&webp=80&av1=40&width=800&hash=d68ef212f18f8f20130a38f31ca5e945e93446a9